Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
mantais
←
Welsh
melfaréd
(link)
←
Welsh
mentr
(link)
←
English
advantage
(borrowed)
→
Welsh
anfantais
(affix)
→
Welsh
manteisio
(affix)